Acetylcholine regulates blood flow, but the source of blood acetylcholine has been unclear. Now, researchers at Karolinska Institutet have discovered that certain T cells in human blood can produce ...

While the exact causes of neurodegenerative brain diseases like Alzheimer's and dementia are still largely unknown, ...

While the exact causes of neurodegenerative brain diseases like Alzheimer's and dementia are still largely unknown, ...

When you start moving, your heart rate spikes, blood flow changes, and your brain becomes more alert. A woman begins her morning workout, a critical time when the body and brain rapidly adapt to meet ...

Photoacoustic imaging systems provide a high-resolution glimpse into the body, but they’re bulky. Now, researchers have developed a miniaturized version that fits into a watch, with hardware contained ...

Within minutes of the final heartbeat, a cascade of biochemical events triggered by a lack of blood flow, oxygen, and nutrients begins to destroy a body’s cells and organs. But a team of Yale ...